Commands by bw

Commands by bw (6)

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show ALL iptable rules

show your current iptable rules from every available iptable table
This is sample output - yours may be different.
1

for i in `cat /proc/net/ip_tables_names`; do iptables -nL -v --line-numbers -t $i ; done

bw · 2010-04-23 13:53:49 0
Send your svn diff to meld

If you like to view what has been changed between revision 100 and the BASE on FILE. Meld will give you a nice overview.
This is sample output - yours may be different.
5

svn diff --diff-cmd='meld' -r 100:BASE FILE

bw · 2010-03-31 11:27:20 0
split and combine different pages from different pdf's

The command shows the real power of the pdftk tool, you can do basically everything you want with multiple pdf's. In the command a book is created from chapters, headings and covers.
This is sample output - yours may be different.
7

pdftk A=chapters.pdf B=headings.pdf C=covers.pdf cat C1 B1 A1-7 B2 A8-10 C2 output book.pdf

bw · 2010-03-02 16:04:50 0
clone an USB stick using dd + see its process

The following command will clone usb stick inside /dev/sdc to /dev/sdd Double check you got the correct usb sticks (origional-clone)with fdisk -l.
This is sample output - yours may be different.
3

dd if=/dev/sdc of=/dev/sdd conv=notrunc & while killall -USR1 dd; do sleep 5; done

bw · 2010-01-12 14:09:40 3
create disk copy over the net without temp files

I wanted to create a copy of my whole laptop disk on an lvm disk of the same size. First I created the logical volume: lvcreate -L120G -nlaptop mylvms SOURCE: dd if=/dev/sda bs=16065b | netcat ip-target 1234 TARGET: nc -l -p 1234 | dd of=/dev/mapper/mylvms-laptop bs=16065b to follow its process you issue the following command in a different terminal STATS: on target in a different terminal: watch -n60 -- kill -USR1 $(pgrep dd) (see http://www.commandlinefu.com/commands/view/4356/output-stats-from-a-running-dd-command-to-see-its-progress)
This is sample output - yours may be different.
6

SOURCE: dd if=/dev/sda bs=16065b | netcat ip-target 1234 TARGET: netcat -l -p 1234 | dd of=/dev/mapper/laptop bs=16065b STATS on target: watch -n60 -- kill -USR1 $(pgrep dd)

bw · 2009-12-16 10:51:06 1
output stats from a running dd command to see its progress

if you start a large dd and forgot about statistics, but you still wonder what the progress is this command in an OTHER terminal will show you the way. NOTE: the watch command by itself will not output anything NOTE: the kill command will not kill the process Show Sample Output
This is sample output - yours may be different.
```
It will let the running dd command outputting stats like this:

5745+20519787 records in
5745+20519787 records out
38845006016 bytes (39 GB) copied, 3389.22 s, 11.5 MB/s
```
2

watch -n60 --kill -USR1 $(pgrep dd)

bw · 2009-12-16 10:35:28 1

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Install pip with Proxy

Installs pip packages defining a proxy

Bitcoin Brainwallet Base58 Encoder

A bitcoin "brainwallet" is a secret passphrase you carry in your brain. The Bitcoin Brainwallet Private Key Base58 Encoder is the third of three functions needed to calculate a bitcoin PRIVATE key from your "brainwallet" passphrase. This base58 encoder uses the obase parameter of the amazing bc utility to convert from ASCII-hex to base58. Tech note: bc inserts line continuation backslashes, but the "read s" command automatically strips them out. I hope that one day base58 will, like base64, be added to the amazing openssl utility.

seq (argc=2) for FreeBSD

find an unused unprivileged TCP port

Some commands (such as netcat) have a port option but how can you know which ports are unused?

Shows size of dirs and files, hidden or not, sorted.

Convert CSV to JSON

Replace 'csv_file.csv' with your filename.

Convert seconds to [DD:][HH:]MM:SS

Converts any number of seconds into days, hours, minutes and seconds. sec2dhms() { declare -i SS="$1" D=$(( SS / 86400 )) H=$(( SS % 86400 / 3600 )) M=$(( SS % 3600 / 60 )) S=$(( SS % 60 )) [ "$D" -gt 0 ] && echo -n "${D}:" [ "$H" -gt 0 ] && printf "%02g:" "$H" printf "%02g:%02g\n" "$M" "$S" }

Which processes are listening on a specific port (e.g. port 80)

swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Write comments to your history.

A null operation with the name 'comment', allowing comments to be written to HISTFILE. Prepending '#' to a command will *not* write the command to the history file, although it will be available for the current session, thus '#' is not useful for keeping track of comments past the current session.

list current processes writing to hard drive

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Commands by bw (6)

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